11.24: Two wave pulses travel to the right towax)g)-xu p *45* (j rx hiivrwke)cl4dvrd a rigid boundary as shown. After reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition ofrdh5xi-ck (4 *j*)4gwlv)iexxvr) u p the pulses when the centers of the individual pulses coincide?

  08.30: A light beam passes thrw1pxv 8kp k d73 2zgh,r;br h1o)g)bqyough the air and strikes the surface of a plastic block. Which pair of87 3x)z1od,w 2; )h yhb1p vkkbprggqr statements correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward yi9i 5vrovwy7*qti p(ki+( ,rthrough the point labeled B in the diagram shown. Thekyqvy(t7i *9r i ivo5w(+pri, ray reaches a flat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflh-3uaw)lz; gol6 a, hiection occurs whenever light is incident on

  05.18: A student hold a hand mirror ejw*+z4pq b98q 9i l+pg+lzejto observe the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand b9zelqg9+ *q +ewi z +j8ppl4jmirror 1 ft behind her head, she will see the back of her head how far behind the wall mirror?

  14.25: It is observed wo,t25+oe/lz h r as 4w* eb3g vai9tkvk,w/y0that a light ray changes direction when it enters a new material. Which one of the following choices is the term best associated with thi 3wyzk4vewwro+g k9b eiat2,l05/,vt* s /haos phenomenon?

  96.19: Light that has wavelength of 500 nm in air hm pnw0 c.-o zfez*p;j:,8 vwr2tq3ejtas wavelength 400 nm in a transparent v pt nj2,t8:;.c-z*w ormzjp3e0we f qmaterial. What is the index of refraction of the material?

  98.04: As sound travels from steel into air, both its spees9n 8/ ptwbj/kd and its:

  00.01: As a wave moves from one medium to p)a(ev1 xoa9 ia second medium with a different index of refraction which of the following wave properties would NEVER changvea(1ix )oap9e?

  05.47: A sound wave generated from a tuning fork of single frequency travels frtc0n m.j rno5gbxcfp um+j n c.2*)b:1om air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wavelength and frequency of the sound as it passes from air to rocbxf:+j2n1m) * b5.c cr0mj.uo tngn pck?

  14.28: A waterproof speaker placed at the bottom of a swimming pool wtvz 29yw t66semits a sound wave that travels toward the surface of the water. w29v 6 tst6zwyIn the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of d .x7p;v)ogzn white light strikes a rectangular glass block with an angle of incidence of 7nz)ovpdx .g ; $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is directed toward a point P on a bound;zo5boa j,rag*a+4bm ary as shown to the right. Which segment best represents the refracted rarb*g,o;mj5a +4a oa bzy?

  98.17: Which diagram best represents whv,ixry1uh) u8 at happens to a ray of light entering air from water? Air is at the top in 8yuhxr ),1iuvall diagrams.

  94.11: The critical angle of a mat:cq 49f 9n dvvdqt*0ei ,j,kirerial is the angle of incidence for which the angle of refraction j kv,*f09eqr:d 94 ,tdciivnqis:

  95.12: The principle underlying fiber optg;stm sat8(qdm8p 7 w8ics is:

  98.36: The critical angle in a transparent *en gtc+inlt,)3kz ;h substance surrounded by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refract il-fazhpzd +w +hijw,w))d02kd9ny ,ion of n = 1.5 to material Y with an index of refraction of n = 2.0. If the spee haf) zkj, lz)w+dw-,hd+9wi y d02pnid of light in material Y is v, what is the speed of light in material X?

  03.15: A jeweler can distinguish be0tg sbbh;(xlxl j oy)/y7*d:s tween a diamond and a piece of glass by observing the critical angle of the light in each materi;7:)x lt0 oslyjyb( d*sbhxg/al. Glass with an index of refraction of 1.52 has a critical angle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. When then42q5 f08qyqepv2 jxe light makes an angle of ince j5 qpfn8xye v2q24q0idence equal to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded nr 8q5pm/o/xo in a material of index of refraction n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters of the laser and target. The value of n in/ mq o8xo5rp/s:

  95.31: A beam of light passes from medium 1 to medium 2 to mediuxet*v0x0r v7 y btet0/2dtv2mep g/:vm 3 as shown in the accompanying figure. What is true about27v*v0vt 0 :pyg/vedex mer0b/2 ttxt the respective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to medium 3 as shown i*fwk,*6ibo.f zxnltf pa, /;ln the diagram. What may be concluded about the three indexes of reofafp*f,. b, t; *l xk6wl/iznfraction, n1, n2 and n3?

  97.24: The accompanying diagramp* xaia iz;g/(egy+u , shows the path that a light ray takes passing throu/,gie *ugp(iy x+; aazgh three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction?

  09.34: The diagram be gu2yu,(9.9texe nhl w:eu+j clow shows the path taken by a monochromatic light ray traveling through thru yu,w+ee eljng u.9t2 :(chx9ee media.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling in glaz2zg8.h 0+)ueuioc x 7asyot.: t;wmqss ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is incident on the sur)mvib4d +p99gu + lepyface of a rectangular block of glass pi)be+dy9gvl 4 9mpu+at an angle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm isg0ty 9 +ujzd4s transmitted from air into a piece of glass. Which one of thed0yzjs 4+t9u g labeled arrows best indicates the path of the light ray after it enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass as s+x., pyl6 2h/+vrmdthr6ejz g9yokl8hown. The glass has an index of refraction of 2.00 and it is surrounded by air. Which one of the lettered rays shows the path of the light after it exit6.rx, olt 2e8+d l+ hkyg v/jhzrm9y6ps the glass?